| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___STOP_TOKEN_STOP_TOKEN_H |
| #define _LIBCPP___STOP_TOKEN_STOP_TOKEN_H |
| |
| #include <__config> |
| #include <__stop_token/intrusive_shared_ptr.h> |
| #include <__stop_token/stop_state.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS) |
| |
| class _LIBCPP_AVAILABILITY_SYNC stop_token { |
| public: |
| _LIBCPP_HIDE_FROM_ABI stop_token() noexcept = default; |
| |
| _LIBCPP_HIDE_FROM_ABI stop_token(const stop_token&) noexcept = default; |
| _LIBCPP_HIDE_FROM_ABI stop_token(stop_token&&) noexcept = default; |
| _LIBCPP_HIDE_FROM_ABI stop_token& operator=(const stop_token&) noexcept = default; |
| _LIBCPP_HIDE_FROM_ABI stop_token& operator=(stop_token&&) noexcept = default; |
| _LIBCPP_HIDE_FROM_ABI ~stop_token() = default; |
| |
| _LIBCPP_HIDE_FROM_ABI void swap(stop_token& __other) noexcept { __state_.swap(__other.__state_); } |
| |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_requested() const noexcept { |
| return __state_ != nullptr && __state_->__stop_requested(); |
| } |
| |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_possible() const noexcept { |
| return __state_ != nullptr && __state_->__stop_possible_for_stop_token(); |
| } |
| |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI friend bool operator==(const stop_token&, const stop_token&) noexcept = default; |
| |
| _LIBCPP_HIDE_FROM_ABI friend void swap(stop_token& __lhs, stop_token& __rhs) noexcept { __lhs.swap(__rhs); } |
| |
| private: |
| __intrusive_shared_ptr<__stop_state> __state_; |
| |
| friend class stop_source; |
| template <class _Tp> |
| friend class stop_callback; |
| |
| _LIBCPP_HIDE_FROM_ABI explicit stop_token(const __intrusive_shared_ptr<__stop_state>& __state) : __state_(__state) {} |
| }; |
| |
| #endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___STOP_TOKEN_STOP_TOKEN_H |